Psychiatric Services of Southern Illinois, LLC
NPI 1689991291 · Psychiatry Physician · Belleville, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Psychiatric Services of Southern Illinois, LLC is a Psychiatry Physician organization in Belleville, IL (NPI 1689991291).
Provider details
- NPI number
- 1689991291
- Entity type
- Organization
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jeffrey Chalfant, Psychiatrist(618) 236-6501
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-23
- Last updated
- 2010-08-05
Frequently asked questions
- What is Psychiatric Services of Southern Illinois, LLC's NPI number?
- Psychiatric Services of Southern Illinois, LLC's National Provider Identifier (NPI) is 1689991291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Psychiatric Services of Southern Illinois, LLC?
- Psychiatric Services of Southern Illinois, LLC is classified in the NPPES registry as Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Psychiatric Services of Southern Illinois, LLC located?
- Psychiatric Services of Southern Illinois, LLC's practice location on file with NPPES is 2900 Frank Scott Pkwy W, Belleville, IL 62223-5000.
- What is Psychiatric Services of Southern Illinois, LLC's phone number?
- The practice phone number listed in the NPPES registry for Psychiatric Services of Southern Illinois, LLC is (618) 236-6501.
- Does Psychiatric Services of Southern Illinois, LLC accept Medicare?
- Psychiatric Services of Southern Illinois, LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Psychiatric Services of Southern Illinois, LLC?
- The authorized official listed on Psychiatric Services of Southern Illinois, LLC's NPPES record is Jeffrey Chalfant, Psychiatrist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Psychiatric Services of Southern Illinois, LLC's NPI active?
- Yes — Psychiatric Services of Southern Illinois, LLC's NPI (1689991291) is active in the NPPES registry as of the last update on 2010-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.